公开(公告)号：US11066343B2

公开(公告)日：2021-07-20

申请号：US16349394

申请日：2017-11-16

Applicant: ENEOS Corporation

Inventor： Yasuhiro Araki ,  Mayumi Yokoi ,  Ryoji Ida ,  Atsushi Segawa ,  Masanari Akiyama

IPC: C07C2/24 ,  C07C5/32 ,  B01J21/04 ,  B01J23/00 ,  B01J23/02 ,  B01J23/26 ,  B01J23/62 ,  C07C5/25 ,  C07C5/333 ,  C07C5/41 ,  C07C2/28 ,  C07B61/00

Abstract: Provided is a method for producing p-xylene, comprising: a provision step of providing a C4 fraction comprising at least isobutene as a product formed by fluidized catalytic cracking of a heavy oil fraction; a dimerization step of bringing a first raw material comprising the isobutene into contact with a dimerization catalyst to produce a C8 component comprising a dimer of isobutene; and a cyclization step of bringing a second raw material comprising the C8 component with a dehydrogenation catalyst to produce p-xylene through a cyclization/dehydrogenation reaction of the C8 component.

公开(公告)号：US11208367B2

公开(公告)日：2021-12-28

申请号：US17042536

申请日：2019-03-19

Applicant: ENEOS Corporation

Inventor： Ai Minoda ,  Masanari Akiyama ,  Yasuhiro Araki

IPC: C07C5/41 ,  C07C2/52 ,  C07C15/08

Abstract: A method for producing p-xylene, comprising: a dimerization step of bringing a first raw material comprising isobutene into contact with a dimerization catalyst to generate C8 components comprising diisobutylene; a cyclization step of bringing a second raw material comprising the C8 components into contact with a dehydrogenation catalyst comprising Pt in the presence of water to obtain a reaction product comprising p-xylene; and a collection step of collecting p-xylene from the reaction product.